Locomotive auxiliary cylinder-port arrangement



July 3, 1928.

w. E WOODARD LOCOMOTIVE AUXILIARY CYLINDER PORT ARRANGEMENT Filed May 2, '1925 2 Sheets-Sheet INVENTOR m, fj/nKd/ML B 5, v ATTORNEYS July 3, 1928. j

I VV. E. WOODARD LOCOMOTIVE AUXILIARY CYLINDER PORT ARRANGEMENT 2 Sheets-Sheet 2 INVENTOR Filed May 2, 1925' BY M741 ATTORNEYS Patented July 3,1928. 1,676,067

UNITED STATES PATENT OFFICE.

WILLIAM E. WOODARD, FOREST HILLS, NEW YORK. LOCOMOTIVE AUXILIARY CYLINDER-PORT ARRANGEMENT. Application filed May 2, 1925. Serial No. 27,431.

This invention has particular reference to Fig. is a detailed sectional view taken that type of locomotive which is known as a on the line 55 of Fig. 4.

limited cut-off structure, these locomotives Referring now more particularly to Fig. 1

being generally operated with what is called it will be seen that I have therein provided a maximum cylinder cut-off of say 50 to a starting port 1 on top of the steam chest 60%. In order that such limited cut-'ofl" valve bushing 2, the regular port opening locomotive may start freely at all positions being shown at 3. Above this starting port of the crank, it has beenheretofore proposed 1, I provide a small chamber 4 formed in the to apply what are known as starting ports casting and connected by an opening 5 with which allow a small amount of steamto be the chamber 6 which extends around the admitted to the cylinders for starting purport 3. Above the chamber 4 I provide an poses. These small starting ports are so Opening in the casting which is closed by a disposed in the apparatus that they may be removable screw threaded plug 7 which can controlled by the valve which also controls be readily taken out when access is desired the main ports. In connection with the t0 the port 1 for cleaning purposes. operation or use of such starting ports cer- The chamber 4 arranged as shown within 5 tain difiiculties have been countered in practhe wall of the casting 8 constitutes an oil tice due to the fact that in regular locomoreservo1r into which oil can be readily tive service these ports tend to become poured after removal of the outside plug 7 clogged with carbon from the oil used and and In which if the port is clogged a small from this cause may become inoperative. In q antity f the 011 W111 lodge which can then 7 order to clean out such ports, it has been be gnlted and thus burn out the starting heretofore the practice to remove the steam port provldlng a ready means of cleaning it chest heads and take out the steam h st from such materials as burned oil or similar valves which involved considerable delay ructing Substances. If necessary some and expense. tool such as a scraper or wire can be intro- My present invention contemplates such a duced directly through the opening which is v disposition of these starting ports in connormally closed by the plug 7 and which nection with the cylinder castings and such ands forthis purpose dire y pp site h an arrangement of the cylinder casting itlng port. self that these ports maybereached from In gs- 3 fi d 4: the starting port is 10- the outside without having to take off the calfed at the Slde 0f the Valve bushlng at the t am h t h d point marked 9 and the oil pocket 10 is made In order that my invention may be better f s lghtly difierent formation adapted to understood, I will proceed to describe the thls 10051131011- same in connection with the accompanying I drawings in which 1. A locomotive auxlliary cylinder: port Fig. 1 shows a vertical section through a arrangemel}t 1 15; 111 comblnalflon a valve bushing with my improvement applied g a g P therem, {1111 thereto; opening n the cylinder steam chest opposlte Fig. 2 is a sectional View on a transverse sald P through Which Said P y be 7 plane, the section of Fig. 1 being taken on' e ned, means for closing said opening and the line l1 of Fig. 2; an 011 receiving pocket between the starting Fig. 3 is a transverse sectional view P014; nd he l anlng op ning.

through a valve bushing and chamber show- 2. In a locomotive steam chest, the combiing a dilferent location of the parts constination of a valve bushing, a main steam port ,95

tuting my improvement; in said bushing, a steam passage communi- Fig. 4 is a longitudinal sectional view on eating with said main port, a comparatively the line 4-4 of Fig. 3; and small capacity auxiliary steam port in the bushing,.apocket communicating with said auxiliary port, and an opening in the steam chest wall afiording access to said auxiliary port through the pocket, said pocket com- 5 municating with said passage.

3. In a locomotive steam chest. the combi nationof a valve bushing, a main steam port in said bushing, a steam passage communicating with said main port. a comparatively 10 small capacity auxiliary steam port in the bushing located well above the bottom portion thereof, a pocket communicating with said auxiliary port, an opening in the steam chest wall opposite the auxiliary port affording access to said auxiliary port through said pocket, and removable means for closing said opening, said pocket communicating with said passage.

In testimony whereof, I have hereunto signed my name.

WILLIAM E. WOODARD. 

